.msg_box{
    display:flex;
}

.msg_avatar{
    width:68px;
    height:68px;
    display:flex;
    justify-content: center;
    align-items:center;
    position: relative;
}

.msg_avatar img{
    width:30px;
    height:30px;
}

.msg_user{
    width:200px;
}

.list_unread{
    display:inline-block;
    width:14px;
    height:14px;
    border-radius:50%;
    text-align:center;
    line-height:14px;
    margin-left:8px;
    font-size:10px;
    background: #f00;
    color:#fff;
    position:absolute;
    right:10px;
    top:8px;
}

.arrow_box{
    width:40px;
    height:100%;
    position:absolute;
    right:0;
    top:0;
}
.arrow_box img{
    margin-top:50%;
    transform:translateY(50%);
}